Mold-jacket.



B ATENTED APR. 28, 1908.

No. 886,187.v

H'. G. CALDWELL.

MULD JACKET.

APPLICATION FILED AUG. s, 190e.

2 SHEETS-SHEET 1.

1HE Nokms Perses cu.. WASHINGTON, :L c4

No. 886,187. PATBNTEDAPR. 28, 1908.

H. c. GALDWELL.-

MOLD JACKET.

APPLICATION FILED AUG. 8, 1906.

2 SHEETS-SHEET 2.

UNITED sTATns PATENT Prion.

HENRY C. CALDWELL, OF BUFFALO, NEW YORK, ASSIGNOR TO CYRUS T. HANNA, OF PHILADELPHIA, PENNSYLVANIA.

I MOLD-JACKET.

Application filed August 8, 1906.`

To all whom it may concern:

Be it known that I, HENRY C. CALDWELL, a citizen of the United States, and a resident of Buffalo, Erie county, New York, have invented certain Improvements in Mold- Jackets, of which the following is a specification.

My invention relates to supporting means employed in connection with molds made of green or dry sand or other similar material, and it consists of an inclosing frame or acket for molds of this character so constructed as to be readily applied to or removed from such molds.

My invention'is fully shown in the accompanying drawings in which:

Figure l, is a perspective view of an ordinary sand mold; Fig. 2, is a similar' perspective view, showing such .mold inclosed in the jacket forming the subject of my invention; Fig. 3, is a view similar to Fig. 2, illustrating a detail of my invention; Fig. 4, is a plan view of the jacket on a smaller scale, showing the same inclosed Fig. 5, is a similar view illustrating my improved jacket in the open position, Figs. 6 and 7, are sectional views of the securing means for the jacket in the open and closed positions; Fig. 8, is a perspective view illustrating a detail of my invention, and Figs. 9 and l0, are views illustrating details of my invention;

In casting various metal shapes in iron or brass, the ordinary foundry practice is to employ molds of different character'. For standard work, particularly when the job is of sufficient value to warrant it, liasks are made, and the cope and drag sections ofthe mold are made and left therein during the pouring operation. ln smaller work, however, and particularly in small jobs, it is customary to employ what are known as snap molds or cores, which are simply green or dry sand molds shaped in any suitable flask but employed without the use of the ask. It will be readily understood therefore, that unless such molds are of extremely small size, or of a delicate pattern, the weight of metal poured therein will oftentimes be s uiiicient to spread them apart and thereby destroy the purpose for which they are intended. To obviate this difliculty, it has been proposed to inclose molds of this character with a frame substantially the size of the mold, but it will be understood that eX- treme care must be taken in applying such Specification of Letters Patent.

Patented April 28, 1908.

Serial No. 329,709.

frame and that there can be no variation in the size of the molds, as otherwise, there Will be great difiiculty in applying the frame thereto. Careless workmen frequently break as many molds in using this frame as would be destroyed by the metal poured into the same. It has also been proposed to obviate these diliiculties by providing tapered frames to be fitted over themolds to hold the same in place, but as this necessitates the making of tapered molds, which are more or less diilioult of manufacture and in fact are very liable to fall from the forming flask in process of manufacture, such tapered frames have not proven entirely satisfactory for the work.

My invention comprises a frame or jacket which may be readily opened prior to being placed around the mold, and then clamped to said mold the exact size of thelatter. This frame or jacket is adjustable within a certain range for many different sizes of molds and when once set it may be used for as many molds as desired, of the same size without readjustment, being readily released preparatory to being placed on said molds, and then closed around the same.

My improved jacket or inclosing frame comprises the sections l, l, preferably made of light sheet metal, which may be of any contour desired, and serving when coupled together to inclose a mold, of square, cylindrical, or rectangular cross-section. In the present instance a square mold is shown and each of the sections of the jacket or inclosing frame is of exactly the same size and shape, and carries the same type of securing means so that any pair of the required size and shape may be employed to hold a mold in place. The end 2 of said sections is'bent into substantial circular form, and the opposite end 3 is straight. Carried bysaid portion 2 is a hub 5 'filling the substantially circular space of the same and having offset at one side thereof spindles 6 whereby it may be journaled in a yoke 7 embracing the ends 2 and 3 of the sections. The upper portion of the spindle forms a handle 8, and upon turning the same, theportion 2 of the jacket or frame will be moved from and toward the portion 3 by the action of the hub 5 which forms a cam or eccentric. The ends of the two sections are coupled together by the yoke 7, in which the spindle is journaled. A thumb screw 9 is threaded into said yoke and has a swivel 10 connection with the end 3 of the other sections so that by turning said thumb screw this portion of the section may be adjusted with respect tothe end 2 of the other section carrying the cam or eccentric. This combined clamping and releasing mechanism is duplicated at each end of the structure, and it will be unnecessary to explain the same in detail any further than above.

It may be desirable for some purposes to employ a removable handle, and this is shown in Fig. 9. The hub 5 is provided with a square shank 6aat its upper end, and the handle 8a has a square socket fitting said shank, and provided with a spring catch 11 to engage a recess 12 in the shank. The catch has a projection 18 whereby it can be readily released when desired.

The method of using this device is as follows: The mold is placed upon. a suitable support 14, and then the acket or frame is opened by turning the eccentrics to the proper position 5 the thumb screw at the same time being drawn back to the full extent. The frame or acket in the fully open position is then placed over the mold; resting upon the base supporting` the latter, and when it has been properly adjusted around said mold, the handles 8 controlling the cams or eccentric hubs 5 are turned so as to move the sections of the frame or jacket toward each other. After this has been done, the thumb screws are turned so as to bring the ends 3 of each section into contact with the portion 2 inclosing the cam or eccentric. The frame is now in substantial contact with all portions of the mold, and the pouring operation may proceed without danger of breakingl or deformation of the same. The frame having been adjusted for a certain sized mold, it is only necessary to turn the handles, thereby opening the sections of the frame and permitting its ready removal, and when once removed, it can be applied to the next mold and clamped in place by turning the handles controlling said eccentrics.

In heavy or surface work there is often danger of the upper portion of the mold lifting, owing to the weight of molten metal passed into the same, and it has been a common expedient 'to place weights on top of said mold. Vhen the sides of the molds are unprotected, such weights tend to collapse the mold, and such accidents frequently take place. l propose to obviate this di'fliculty and at the same time provide for the placing of the necessary weight to hold down the top of the mold, by securing arms or rods to the sides of the acket or frame; such rods having portions at right angles to their length which extend into and overlie the mold ilush with the top of the same and permit the placing thereon of weights to prevent the lifting of the mold due to any pressure exerted within the same by the molten metal or by gases evolved during the pouring of the same. This arrangement is fully shown in F ig. 3, the arms or rods are indicated at 15, being guided by lugs 16 pressed out of the sides of the frame or jackets; sleeves 17 being disposed between said lugs and having set screws 18 whereby the rods may be adjusted and supported at the desired elevation. These rods carry at their upper ends the pieces 19 set at right angles thereto, which are embedded in and overlie the top of the mold; the underside of said pieces 19 being tapered to readily enter the mold. Instead of this style of arm, l may employ that shown in Fig. 10, which consists of a stem 15a having a wedge-shaped projection 20 at its lower end adapted to a similarly shaped opening 21 in the side of the frame. The projection 2O is grooved to fit the sides of the opening 21; the latter being slightly larger than the projection 2() so that it may be entered at the top and dropped into place. The projections 20 may be adjustably mounted with respect to the stems 15a.

l claim:

1. An adjustable and removable acket or frame for molds comprising a plurality of sections, in combination with means for moving said sections from and toward each other, said means serving also to hold said sections relatively lixed in open and closed positions.

'2. An adjustable and removable jacket or frame for molds, comprising a pair of separable sections of similar size andshape, and means for moving said sections from and toward each other, said means serving also to hold said sections relatively fixed in open and closed positions.

3. An adjustable and removable jacket or frame for molds, comprising a plurality of sections arranged for mutual engagement with a mold but movable therefrom without separation, means for holding said sections together for relative movement without separation, and coacting means combined therewith for moving them into and out of contact with the molds, such means serving also to hold said sections relatively lixed in open and closed positions.

4. An adjustable and removable jacket or frame for molds, comprising a plurality of sections arranged for mutual engagement with a mold but movable therefrom without separation, means for adjusting said sections with respect to the molds and relatively to each other for greater or less separation when open, and means for moving said sections into and out of contact with the molds, such means serving also to hold said sections relatively fixed in open and closed positions.

5. An adjustable and removable jacket or frame for snap-molds, comprising a plurality of sections having means for adjustably fitting them to said molds and releasing them therefrom to permit of ready application and removal, such means serving also to coniine said sections against separation and to hold them relatively iixed in any degree ofl the open and closed ositions. Y

6. A jacket or trame for molds, comprising duplex sections of similar size and shape arranged to embrace a mold, means for confining said sections together for relative movement Without separation, and co-acting means carried by said sections for adjusting and releasing the same, such means serving to hold the sections relativelyT fixed in any degree of the open and closed positions.

7. A jacket or frame for molds, comprising duplex sections of similar size and shape arranged to embrace a mold, means for confining said sections together for relative movement Without disengagement, co-acting means carried by said sections for adjusting the same relatively to the mold, and cams or eccentrics for releasing said sections.

8. A jacket or frame for snap-molds, comprising duplex sections of similar size and shape arranged to embrace a mold, yokes connecting the ends of said sections, means carried by said yokes for adjusting said frame, and cams or eccentrics for releasing the same.

9. A jacket or frame for snap-molds, comprising duplex sections of similar size and shape arranged to embrace a mold, means for confining said sections together for relative movement Without disengagement, co-acting means carried by said sections for adjusting and releasing said frame, and adjustable weight supporting means carried by said sections.

10. A jacket or frame for snap-molds, comprising separable sections arranged to embrace a mold, means at the meeting ends of said sections for coniining them together for relative movement Without separation, and co-acting means for adjusting said sections from and towards each other, such confining and adjusting means serving to hold said sections relatively fixed in any degree of the open and closed positions.

11. A jacket or frame for molds, comprising separable sections arranged to embrace a mold, means at the ends of said sections for confining them together for relative movement without disengagement, means for adj usting the meeting ends of each section from and toward the other, and means for moving said meeting ends from and toward each other after such adjustment, said latter means holding said sections relatively fixed in open and closed positions.

12. A jacket or frame for molds, comprising sections arranged to embrace a mold, means for conining the ends of said sections together, means for moving the meeting ends of each section from and toward each other, and cams or eccentrics for opening and closing said jacket, such means serving to hold the sections relatively xed in open and closed positions.

13. A jacket or frame for molds, comprising sections designed to embrace the molds,

means for confining the ends of said sections together, a thumb screw for moving each pair of'meeting ends from and toward each other, and a cam or eccentric employed to open and close the sections forming said jacket.

14. A jacket or frame for molds, comprising adjustable and removable sections arranged to embrace the same, and adjustable Weight supports carried by the sections of said jacket.

15. A jacket or frame for molds, comprising separable sections arranged to embrace the same, and removable weight supporting rods carried by the Walls of the sections forming said jacket.

16. A jacket or frame formolds, comprising separable sections arranged to embrace the same, adjustable and removable Weight supporting rods carried by the Walls of the sections forming said jacket, and means for holding said rods in their adjusted positions.

17. A jacket or frame for molds arranged to embrace the same, Weight supporting arms carried by said jacket, and projections carried by said arms and entering the sand of the molds.

ln testimony whereof, l have signed my name to this speciiication, in the presence of two subscribing Witnesses.

HENRY C. CALDWELL.

Witnesses:

MURRAY C. BOYER, Jos. H. KLEIN. 

